If he can 1) prove in court he is Satoshi with this and 2) then he has the 'proof' to make the Bitcoin Devs make a 'fork' to get all Satoshi's coin 3) Well, BTC as such is 'toast' IMHO at that point. Remember it is a 'Jury' Trial..so if he can 'convince' them of the above it will be 'quite' the sh*tshow then.
Imho I don't think any of these matter at all. The only thing that matters is if he can claim copyright for bitcoin's source code - which if granted would set an extremely dangerous precedent when it comes to other open source software. Which is why I am 100% certain it won't happen.